﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Threading;

public partial class Controls_TestControlCMNB : System.Web.UI.UserControl
{
    #region Private Properties
    private int CurrentPage
    {
        get
        {
            object objPage = ViewState["_CurrentPage"];
            int _CurrentPage = 0;
            if (objPage == null)
            {
                _CurrentPage = 0;
            }
            else
            {
                _CurrentPage = (int)objPage;
            }
            return _CurrentPage;
        }
        set { ViewState["_CurrentPage"] = value; }
    }
    private int fistIndex
    {
        get
        {
            int _FirstIndex = 0;
            if (ViewState["_FirstIndex"] == null)
            {
                _FirstIndex = 0;
            }
            else
            {
                _FirstIndex = Convert.ToInt32(ViewState["_FirstIndex"]);
            }
            return _FirstIndex;
        }
        set { ViewState["_FirstIndex"] = value; }
    }
    private int lastIndex
    {
        get
        {

            int _LastIndex = 0;
            if (ViewState["_LastIndex"] == null)
            {
                _LastIndex = 0;
            }
            else
            {
                _LastIndex = Convert.ToInt32(ViewState["_LastIndex"]);
            }
            return _LastIndex;
        }
        set { ViewState["_LastIndex"] = value; }
    }
    #endregion

    #region PagedDataSource
    PagedDataSource _PageDataSource = new PagedDataSource();
    #endregion

    #region Private Methods
    /// <summary>
    /// Build DataTable to bind Main Items List
    /// </summary>
    /// <returns>DataTable</returns>
    private DataTable GetDataTable()
    {
        DataTable dtItems = new DataTable();

        DataColumn dcName = new DataColumn();
        dcName.ColumnName = "title";
        dcName.DataType = System.Type.GetType("System.String");
        dtItems.Columns.Add(dcName);

        DataRow row;
        for (int i = 1; i <= 5; i++) // edit 100 ve 5, la tong so ban ghi
        {
            row = dtItems.NewRow();
            row["title"] = "<div id='show'>";
            row["title"] += "<img src='Images/dltn/benNgheTravel.png'/>";
            row["title"] += "<p>Sáng ngày 26/6, tại Khu du lịch Le BelHamy (xã Điện Dương, Điện Bàn, Quảng Nam) đã diễn ra Hội thảo báo Đảng miền Trung – Tây nguyên với chủ đề liên kết tuyên truyền phát triển du lịch, do báo Quảng Nam đăng cai tổ chức.";
            row["title"] += i + "</p>";
            row["title"] += "<a href='#'>Xem tiếp</a>";
            row["title"] += "</div>";
            dtItems.Rows.Add(row);

        }
        return dtItems;

    }

    /// <summary>
    /// Binding Main Items List
    /// </summary>
    private void BindItemsList()
    {

        DataTable dataTable = this.GetDataTable();
        _PageDataSource.DataSource = dataTable.DefaultView;
        _PageDataSource.AllowPaging = true;
        _PageDataSource.PageSize = 1; // edit 10 con 5, so ban ghi load o moi trang
        _PageDataSource.CurrentPageIndex = CurrentPage;
        ViewState["TotalPages"] = _PageDataSource.PageCount;

        //this.lblPageInfo.Text = "Page " + (CurrentPage + 1) + " of " + _PageDataSource.PageCount;
        this.lbtnPrevious.Enabled = !_PageDataSource.IsFirstPage;
        this.lbtnNext.Enabled = !_PageDataSource.IsLastPage;
        //this.lbtnFirst.Enabled = !_PageDataSource.IsFirstPage;
        //this.lbtnLast.Enabled = !_PageDataSource.IsLastPage;

        this.dListItems.DataSource = _PageDataSource;
        this.dListItems.DataBind();
        this.doPaging();
    }

    /// <summary>
    /// Binding Paging List
    /// </summary>
    private void doPaging()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("PageIndex");
        dt.Columns.Add("PageText");

        fistIndex = CurrentPage - 5;


        if (CurrentPage > 5)
        {
            lastIndex = CurrentPage + 5;
        }
        else
        {
            lastIndex = 10;
        }
        if (lastIndex > Convert.ToInt32(ViewState["TotalPages"]))
        {
            lastIndex = Convert.ToInt32(ViewState["TotalPages"]);
            fistIndex = lastIndex - 10;
        }

        if (fistIndex < 0)
        {
            fistIndex = 0;
        }

        for (int i = fistIndex; i < lastIndex; i++)
        {
            DataRow dr = dt.NewRow();
            dr[0] = i;
            dr[1] = i + 1;
            dt.Rows.Add(dr);
        }

        this.dlPaging.DataSource = dt;
        this.dlPaging.DataBind();
    }
    #endregion


    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            this.BindItemsList();
        }
    }
    protected void lbtnNext_Click(object sender, EventArgs e)
    {

        CurrentPage += 1;
        if (CurrentPage >= 6)
            return;
        else
            this.BindItemsList();


    }
    protected void lbtnPrevious_Click(object sender, EventArgs e)
    {
        CurrentPage -= 1;
        if (CurrentPage < 0)
            return;
        else       
            this.BindItemsList();
       
    }
    protected void dlPaging_ItemCommand(object source, DataListCommandEventArgs e)
    {
        if (e.CommandName.Equals("Paging"))
        {
            Thread.Sleep(2000);
            CurrentPage = Convert.ToInt16(e.CommandArgument.ToString());
            this.BindItemsList();
        }
    }
    protected void dlPaging_ItemDataBound(object sender, DataListItemEventArgs e)
    {
        //LinkButton lnkbtnPage = (LinkButton)e.Item.FindControl("lnkbtnPaging");
        ImageButton lnkbtnPage = (ImageButton)e.Item.FindControl("lnkbtnPaging");
        if (lnkbtnPage.CommandArgument.ToString() == CurrentPage.ToString())
        {
            lnkbtnPage.Enabled = false;
            //lnkbtnPage.Style.Add("fone-size", "10px");
            //lnkbtnPage.Font.Bold = true;
            lnkbtnPage.ImageUrl = "../Images/dltn/nuttronvang.png";
        }
    }
}